14. Treatment with corticosteroids in an increasing dosage in the 7 days prior to 89Zr-pembrolizumab injection. (A stable or decreasing dosage of ≤ 1,5 mg dexamethasone or ≤ 10 mg prednisolone equivalent is allowed. In addition, inhaled or topical steroids and adrenal replacement doses are permitted in the absence of active autoimmune disease.)